package top.arryweb.application.common.utils;

import org.springframework.aop.framework.AopContext;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * @Description Spring工具类 方便在非Spring管理环境中获取bean
 * @Author mac
 * @Date 2021/6/20
 **/
public class SpringUtils implements BeanFactoryPostProcessor, ApplicationContextAware {

  /**
   * spring应用上下文环境
   */
  private static ConfigurableListableBeanFactory beanFactory;
  private static ApplicationContext applicationContext;

  @Override
  public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
      throws BeansException {
    SpringUtils.beanFactory = beanFactory;
  }

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    SpringUtils.applicationContext = applicationContext;
  }

  /**
   * 获取对象
   *
   * @return Object 一个以所给名字注册的bean实例
   */
  @SuppressWarnings("unchecked")
  public static <T> T getBean(String name) throws BeansException {
    return (T) beanFactory.getBean(name);
  }

  /**
   * 获取类型为requiredType的对象
   */
  public static <T> T getBean(Class<T> clz) throws BeansException {
    T result = beanFactory.getBean(clz);
    return result;
  }

  /**
   * 如果BeanFactory包含一个与所给名称匹配的bean定义，则返回true
   * @param name
   * @return
   */
  public static boolean containsBean(String name) {
    return beanFactory.containsBean(name);
  }

  /**
   * 判断以给的名字注册的bean定义是一个singleton还是一个prototype,如果与给定名字相应的bean没有找到，将会抛出一个异常
   * @param name
   * @return
   */
  public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
    return beanFactory.isSingleton(name);
  }

  /**
   *
   * @param name
   * @return Class  注册对象的类型
   * @throws NoSuchBeanDefinitionException
   */
  public static Class<?> getType(String name) throws NoSuchBeanDefinitionException{
    return beanFactory.getType(name);
  }

  /**
   * 获取aop代理对象
   * @param invoker
   * @param <T>
   * @return
   */
  public static <T> T getAopProxy(T invoker){
    return (T) AopContext.currentProxy();
  }

  /**
   * 获取当前的环境配置，无配置返回null
   * @return 当前环境的配置
   */
  public static String[] getActieProfiles(){
    return applicationContext.getEnvironment().getActiveProfiles();
  }

  /**
   * 获取当前的环境配置，当有多个环境配置时，只获取第一个
   * @return
   */
  /*public static String getActiveProfiles(){
    final String[] activeProfiles = getActieProfiles();
    return StringUtils.isNotEmpty(activeProfiles) ? activeProfiles[0] : null;
  }*/
}
